Nonsqueak hammock and swing hanger



Dec. 5, 1939. s. HUDSON NONSQUEAK HAMMOCK AND SWING HANGER Filed Sept.27, 1937 AMA-5E5 5 Patented Dec. 5, 1939 UNlTED STATES PATENT orricsNONSQUEAK HAMMOCK AND SWING HAN GER 1 Claim.

My invention pertains to wall hooks and particularly to that class ofhooks which are employed in the hanging of hammocks and swings.

Hammocks and swings are usually subjected to heavy loads and theirconstant oscillation grinds together the constantly contacting metalsurfaces of the hooks by which they are supported; for this reason it isonly a matter of a short time before a nerve-torturing screech develops,which 1 greatly lessens, if it does not wholly destroy, the pleasurableand soothing sensations produced by the gentle to and fro motion of thehammock or swing.

The principal object of my invention is the production of a hook forhanging hammocks and swintgs which is nonsqueaking and silently efiicienOf course my hook is useful and appropriate wherever any other style ofhook can be used; but it is especially adapted for use in those placeswhere an object supported by the hook has a swinging or oscillatingmotion which, sooner or later, causes an annoying squeak.

To illustrate the best method of practicing the invention now known tome, I have filed a sheet of drawings as a part of this specification, inwhich the reference numbers wherever used in the several figures denotethe same elements.

Figure 1 is an elevational view of my non- 3 squeak hook, parts being insectlon to better illustrate the construction;

Fig. 2 is a side elevation, the view being taken looking at the righthand side of Fig. l, a part being in section to show the cross sectionof the pintle;

Fig. 3 is a view from below, looking upward,

the arms of the yoke being shown in section;

Fig. 4 is a side elevation, the view being taken looking at the lefthand side of Fig. 1, a part of 4 the hook being broken away and thepintle anchoring pin being in section on a line just under its head.

As illustrated in the drawing, my invention is attached to a wall, aceiling or other similar plane surface by screws which pass throughholes provided for that purpose in a suitable plate 2; plate 2 may beproduced by casting, by forging or by any other suitable method whichwill assure suitable rigidity and strength; formed integrally with 50plate 2 is a projecting boss 3 which is bored with a bit of the properdiameter to form a barrel to properly house a pintle 4.

When the hook is to be attached to other than a plane surface like around pole, column, tree limb or the like it will be better tosubstitute for the plate 2 a cylindrical part attached to the boss 3 tocarry wood-screw threads which may be screwed into the uneven surface.

Pintle 4 is of a diameter to snugly fit the bore in boss 3 and it islong enough to project beyond the bore in boss 3 sufficiently to passthrough the arms of a yoke 5.

Yoke 5 is U-shape in form. Both arms of the U-shape yoke are supportedby pintlefl which passes through holes provided for that purpose in thearms of the yoke 5 and the barrel bored in boss 3.

Pintle 4 is provided with a head at one end similar in shape tothe headof a carriage-bolt; at its other end it is squared with a square 8 thediagonal of which is the diameter of the pintle in its cylindrical partand the length of the squared portion is just as long as the thicknessof the arm of yoke 5 in which it is seated.

Yoke 5 is just the right size to straddle the boss 3. One arm of yoke 5is bored with the same size bit used to bore boss 3 so that pintle 4just snugly fits it; the other arm of yoke 5 is provided with a squarehole 1 to accommodate the squared end 8 of pintle 4. The squared end ofpintle 4 is bored centrally and screw-threaded to receive ascrew-threaded anchor pin ll. Anchor pin H is provided with a large fiathead similar to the head on the pintle 4; however I usually cut a kerfin it so it can be manipulated conveniently with a screw driver. Ofcourse it is not essential that the head of the anchor pin II have akerf in, it because it might be made polygonal for manipulation by awrench.

The side arms of yoke 5 are connected by a cross bar l4 and to thiscross bar M is attached, approximately at its middle, a hook l3. Hook I3may be formed in any desired manner; it may be forged integrally withthe cross bar M or it may be welded thereto or it may be connected byscrew threads or it may be loosely swiveled to bar I4.

The wall of the barrel made by boring boss 3 is tapped for theattachment of a grease-cup l5, preferably on the side diametricallyopposite to plate 2 and the steam of the plunger of the greasecup isconnected thereto by screw threads, riveting or any other desired andsuitable manner. The grease-cup is of the usual kind, purchasable in theopen market and is composed of an exteriorly screw threaded plunger on aplunger stem and an interiorly threaded cup to engage the threads on theplunger. The plunger and the plunger stem have a continuous hole throughthem. When the cup is partially filled with hard grease and its interiorthreads are engaged with the exterior threads of the plunger continuedturning of the cup will cause the grease to be extruded through the holein the plunger and the plunger stem for the lubrication of any part towhich it may be applied.

My invention is not limited to a pintle having a squared end. It isbroad enough to include a pintle having any irregularly shaped endwhich, placed in a correspondingly shaped hole in an arm of the yoke,will cause the yoke and the pintle to oscillate as a unit. However, Iprefer a square ended pintle, because it is easier to make than anyother shape which has more than four sides and, by shifting the wearingsurface from quadrant to quadrant of the pintle surface, the hook devicewill last much longer than anyone is liable to care to use it. It willbe obvious that when the yoke and the pintle are locked together andcaused to oscillate as a unit the direct pressure will be distributedthroughout the entire length of the pintle, consequently the wear on thepintle will be much less noticeable than when the yoke is permitted toswing on the pintle. In fact experience has shown that if the pintle iskept well greased as intended the wear upon the used quadrant of thepintle is so slight that it amounts to no more than polishing thesurface.

To use my invention, plate 2 is fastened to a wall, ceiling or othersuitable surface by strong wood-screws passing through the holes in theplate provided for that purpose; such holes are located that, whetherthe plate is placed longitudinally or transversely of a stuclding or ajoist, two screws will enter the timber. After the plate is securelyfastened, the arms of the yoke 5 are placed upon the sides of boss 3 insuch a position that the holes through the arms are in regisration withthe hole or barrel through the boss. Pintle 4 is then inserted throughthe yoke arm having the round hole, through the barrel in boss 3 and itssquared end is seated in the square hole in the other yoke arm with theselected quadrant of the pintle downward and then locked in thatposition by anchoring pin I I. Grease-cup [5, after being partiallyfilled with a good quality lubricant, is engaged with the plunger andscrewed down until the desired quantity of grease is extruded againstthe pintle.

When constructed as described and arranged as explained my non-squeakhammock hanger will give many years of noiseless service.

Having fully described the manner of constructing my invention andexplaining the manner of using, I desire to secure Letters Patent of theUnited States to protect me in the exclusive use of the following claim.

A barrel-like element having a perforation through its wall, means forattaching the element to a support, a force-feed lubricating device todeliver lubricant through the perforation, in combination with aU-shaped yoke for straddling the barrel-like element, one arm of theyoke having a circular perforation therethrough, the other arm of theyoke having a non-circular perforation therethrough, a cylindricalpintle to pass through the circular perforation in the arm of the yoke,the pintle having a non-cylindrical end to fit the non-circularperforation in the other arm of the yoke whereby the yoke and the pintleare locked together to oscillate as a unit and the pintle may be shiftedto other positions to present new wear.- ing surfaces.

SAMUEL L. HUDSON.

